Epson S5U1C60N08D Manual page 21

Cmos 4-bit single chip microcomputer
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12 I/O port specification
*** OPTION
NO.12 ***
--- I/O PORT SPECIFICATION ---
P00
PLEASE SELECT NO.(1) ? 1
P01
PLEASE SELECT NO.(1) ? 1
P02
PLEASE SELECT NO.(1) ? 2
P03
PLEASE SELECT NO.(1) ? 1
P10
PLEASE SELECT NO.(1) ? 2
P11
PLEASE SELECT NO.(1) ? 2
P12
PLEASE SELECT NO.(1) ? 2
P13
PLEASE SELECT NO.(1) ? 2
P00
1. COMPLEMENTARY
P01
1. COMPLEMENTARY
P02
1. COMPLEMENTARY
P03
1. COMPLEMENTARY
P10
2. P-CH OPEN DRAIN
P11
2. P-CH OPEN DRAIN
P12
2. P-CH OPEN DRAIN
P13
2. P-CH OPEN DRAIN
13 SIN pull down resistor
*** OPTION
NO.13 ***
--- SIN PULL DOWN RESISTOR ---
SIN PULL DOWN RESISTOR
PLEASE SELECT NO.(1) ? 1
SIN PULL DOWN RESISTOR
S5U1C60N08D MANUAL
(DEVELOPMENT SOFTWARE TOOL FOR S1C60N08)
1. COMPLEMENTARY
2. P-CH OPEN DRAIN
1. COMPLEMENTARY
2. P-CH OPEN DRAIN
1. COMPLEMENTARY
2. P-CH OPEN DRAIN
1. COMPLEMENTARY
2. P-CH OPEN DRAIN
1. COMPLEMENTARY
2. P-CH OPEN DRAIN
1. COMPLEMENTARY
2. P-CH OPEN DRAIN
1. COMPLEMENTARY
2. P-CH OPEN DRAIN
1. COMPLEMENTARY
2. P-CH OPEN DRAIN
SELECTED
SELECTED
SELECTED
SELECTED
SELECTED
SELECTED
SELECTED
SELECTED
1. WITH RESISTOR
2. GATE DIRECT
1. WITH RESISTOR
SELECTED
EPSON
3 FUNCTION OPTION GENERATOR FOG6008
Select the output specification when the I/O ports
(P00–P03 and P10–P13) are in output mode.
Either complementary output or Pch open drain
output may be selected.
The circuit configuration of the output driver is the
same as those of the output ports R00–R03 (Figure
3.3.3).
Select complementary output for unused ports.
The I/O ports can control the input/output direction
according to the IOC bit (2EEH•D0 and
2FEH•D0); at "1" and "0" settings, it is set to
output port and input port, respectively.
The pull down resistor of this port is turned on by
the read signal and is normally turned off to
minimize leak current.
Because of this, when the port is set for input, take
care that a floating state does not occur in the
terminal.
The I/O port circuit configuration is shown in
Figure 3.3.7.
Read signal
Register
I/O control
register
Fig. 3.3.7 Circuit configuration of I/O port
Select whether pull down resistor will be supple-
mented to the SIN terminal (SIO data input
terminal). When "GATE DIRECT" is selected, take
care that input floating state does not occur. Select
"WITH RESISTOR" if the SIN terminal will not be
used.
P
V
SS
15

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